content: /*
   * Copyright 2016-present David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.rxjava3.operators;
  
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.schedulers.*;
  import io.reactivex.rxjava3.subscribers.TestSubscriber;
  
  public class FlowableIntervalBackpressureTest {
  
      @Test
      public void period() {
          Flowables.intervalBackpressure(1, TimeUnit.MILLISECONDS)
          .rebatchRequests(1)
          .take(10)
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertResult(0L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L);
      }
  
      @Test
      public void periodScheduler() {
          Flowables.intervalBackpressure(1, TimeUnit.MILLISECONDS, Schedulers.single())
          .rebatchRequests(1)
          .take(10)
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertResult(0L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L);
      }
  
      @Test
      public void initial() {
          Flowables.intervalBackpressure(100, 1, TimeUnit.MILLISECONDS)
          .rebatchRequests(1)
          .take(10)
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertResult(0L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L);
      }
  
      @Test
      public void initialScheduler() {
          Flowables.intervalBackpressure(100, 1, TimeUnit.MILLISECONDS, Schedulers.single())
          .rebatchRequests(1)
          .take(10)
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertResult(0L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L);
      }
  
      @Test
      public void backpressure() {
          TestScheduler scheduler = new TestScheduler();
  
          TestSubscriber<Long> ts = Flowables.intervalBackpressure(1, TimeUnit.MILLISECONDS, scheduler)
          .test(0L);
  
          ts.assertEmpty();
  
          scheduler.advanceTimeBy(3, TimeUnit.MILLISECONDS);
  
          ts.assertEmpty();
  
          scheduler.advanceTimeBy(2, TimeUnit.MILLISECONDS);
  
          ts.request(2);
  
          ts.assertValues(0L, 1L);
  
          scheduler.advanceTimeBy(3, TimeUnit.MILLISECONDS);
  
          ts.assertValues(0L, 1L);
  
          ts.request(5);
  
          ts.assertValues(0L, 1L, 2L, 3L, 4L, 5L, 6L);
  
          ts.request(10);
  
          ts.assertValues(0L, 1L, 2L, 3L, 4L, 5L, 6L, 7L);
  
          ts.assertNoErrors()
          .assertNotComplete()
          ;
      }
  
      @Test
      public void syncCancel() {
          TestScheduler scheduler = new TestScheduler();
  
          TestSubscriber<Long> ts = new TestSubscriber<Long>() {
              @Override
              public void onNext(Long t) {
                  super.onNext(t);
                  cancel();
                  onComplete();
              }
          };
  
          Flowables.intervalBackpressure(1, TimeUnit.MILLISECONDS, scheduler)
          .subscribe(ts);
  
          scheduler.advanceTimeBy(1, TimeUnit.MILLISECONDS);
  
          ts.assertResult(0L);
      }
  }
  